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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A187105 Triangle T(n,k) read by rows: number of height-2-restricted finite functions.

Table of values

n a(n)
1 1
2 1
3 1
4 3
5 2
6 1
7 10
8 8
9 3
10 1
11 41
12 38
13 15
14 4
15 1
16 196
17 216
18 90
19 24
20 5
21 1
22 1057
23 1402
24 633
25 172
26 35
27 6
28 1
29 6322
30 10156
31 5028
32 1424
33 290
34 48
35 7
36 1
37 41393
38 80838
39 44217
40 13204
41 2745
42 450
43 63
44 8
45 1
46 293608
47 698704
48 424434
49 134680
50 28900
51 4776
52 658
53 80
54 9
55 1

List of values

[1, 1, 1, 3, 2, 1, 10, 8, 3, 1, 41, 38, 15, 4, 1, 196, 216, 90, 24, 5, 1, 1057, 1402, 633, 172, 35, 6, 1, 6322, 10156, 5028, 1424, 290, 48, 7, 1, 41393, 80838, 44217, 13204, 2745, 450, 63, 8, 1, 293608, 698704, 424434, 134680, 28900, 4776, 658, 80, 9, 1]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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